CVE-2026-45593

Windows SDK Elevation of Privilege Vulnerability

CVSS 7.8 HIGHEPSS 0.3%CWE-190 CWE-416

Use after free in Windows SDK allows an authorized attacker to elevate privileges locally.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Affected products

Microsoft · Windows 10 Version 1809 Microsoft · Windows 10 Version 21H2 Microsoft · Windows 10 Version 22H2 Microsoft · Windows 11 version 23H2 Microsoft · Windows 11 Version 24H2 Microsoft · Windows 11 Version 25H2 Microsoft · Windows 11 version 26H1 Microsoft · Windows Server 2019 Microsoft · Windows Server 2019 (Server Core installation)Microsoft · Windows Server 2022 Microsoft · Windows Server 2025 Microsoft · Windows Server 2025 (Server Core installation)

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References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45593